Major cringe. Fortunately Arquette was cool as a cucumber and just kept on smiling. And then she won the Best Supporting Actress award for her role in Boyhood, which presumably more than makes up for it.

Just to make sure everyone else out there knows the difference here's a quick reminder. Because nobody likes to be mistaken for her sister, no matter how awesome said sister is.

Photo credit: FayesVision/WENN.com; Lia Toby/WENN.com

The 2015 Batfa Award winners in full:

LEADING ACTOR: Eddie Redmayne,The Theory Of Everything

LEADING ACTRESS: Julianne Moore, Still Alice

BEST FILM: Boyhood

SUPPORTING ACTOR: J.K. Simmons, Whiplash

SUPPORTING ACTRESS: Patricia Arquette, Boyhood

OUTSTANDING BRITISH FILM: The Theory of Everything

DIRECTOR: Richard Linklater, Boyhood

ORIGINAL SCREENPLAY: The Grand Budapest Hotel

ADAPTED SCREENPLAY: The Theory of Everything

OUTSTANDING DEBUT BY A BRITISH WRITER, DIRECTOR OR PRODUCER: Stephen Beresford (Writer), David Livingstone (Producer) Pride